Delta Electronics LCP-1250B4QDRx User Manual
RoHS Compliant Single Mode SFP Transceiver for GbE and Fiber
Channel
FEATURES
Description
The LCP-1250B4QDRx series are hot
pluggable 3.3V Small-Form-Factor transceiver
modules designed expressly for high-speed
communication applications that require rates up
to 1.25Gb/s. The transceiver is data rate
transparent, which means it can support GbE
(1.25Gb/s) as well as 1x Fiber channel
(1.062Gb/s) operations
The LCP-1250B4QDRx series are designed
to be compliant with SFP Multi-source Agreement
(MSA). Digital diagnostic monitoring functions
(Temperature, V
bias current, and RX received optical power)
compliant with SFF-8472 are also available. See
order information for details.
The post-amplifier of the LCP-1250B4QDRx
series also includes a Loss of Signal (LOS) circuit
that provides a TTL logic-high output when the
received optical level is below a preset LOS
Assert threshold.
, TX optical power, TX laser
CC
z Compliant with SFP Transceiver SFF-8472
MSA specification with internal calibration
z Compliant with Specifications for IEEE
802.3z/Gigabit Ethernet
z LCP-125B4QDRx compliant with the
1.0625GBd Fiber Channel 100-SM-LC-L FC-PI
Rev.13
z Single + 3.3V Power Supply and TTL Logic
Interface
z EEPROM with Serial ID Functionality
z Laser Class 1 Product which comply with the
requirements of IEC 60825-1 and IEC 60825-2
z Duplex LC Connector interface
Applications
z Gigabit Ethernet
z Switch to Switch interface
z Switched backplane applications
z File server interface
Performance
z LCP-1250B4QDRx: 1310nm FP laser, 10.5dB
link budget (10km)
DELTA ELECTRONICS, INC.
1 2008/1/23
Rev. 6G
www.deltaww.com
Absolute Maximum Ratings
Parameter Symbol Min. Typ. Max. Unit Note
Storage Temperature Ts -40 85 ºC
Supply Voltage VCC 0 5 V
Recommended Operating Conditions
Parameter Symbol Min. Typ. Max. Unit Note
Case Operating Temperature TC -5 70 ºC 1
Supply Voltage VCC 3.135 3.465 V
Relative Humidity (non condensation) - 5 85 %
Note 1: See order information
Electrical Characteristics
(VCC=3.3V ± 5%)
Parameter Symbol Min. Typ. Max. Unit Note
Total Supply Current ICCT 300 mA
Transmitter
Transmitter Differential Input Voltage VDT 0.5 2.4 V 1
Transmitter Disable Input-High V
Transmitter Disable Input-Low V
Transmitter Fault Pull up Resistor R
Transmitter Fault Output-High V
Transmitter Fault Output-Low V
Receiver
Receiver Differential Output Voltage VDR 0.35 2 V 3
Receiver LOS Load R
LOS Output Voltage-High V
LOS Output Voltage-Low V
Output Data Rise/Fall Time tr / tf 220 psec 4
Notes:
1. Internally AC coupled and terminated to 100Ohm differential load.
2 VCC+0.3 V
DISH
0 0.8 V
DISL
TX_FAULT
TXFH
TXFL
RXLOS
LOSH
LOSL
4.7 10 k 2
2 VCC+0.3 V 2
0 0.8 V 2
4.7 10 k 2
2 VCC+0.3 V 2
0 0.8 V 2
2. Pull up to V
on host Board
CC
3. Internally AC coupled, but requires a 100Ohm differential termination at or internal to Serializer/
Deserializer.
4. These are 20%~80% values
2 2008/1/23
Rev. 6G
DELTA ELECTRONICS, INC.
www.deltaww.com
Optical Characteristics
(VCC=3.3V ± 5%, Data Rate=1250Mb/sec, PRBS=27-1 NRZ)
Parameter Symbol Min. Typ. Max. Unit Note
Transmitter
Output Optical Power (Avg.) PO
-9.5 -3
Optical Extinction Ratio 9 dB
Center Wavelength
Spectral Width (RMS)
Optical Rise/ Fall Time
λ
C
σ
260 psec 1
t
r/tf
1274 1310 1355 nm
4 nm
Receiver
Sensitivity (Avg.) PIN
Input Optical Wavelength
λ
LOS-Deasserted (Avg.) PA
-20
1270 1570 nm
-19
LOS-Asserted (Avg.) PD -36 dBm
LOS-Hysteresis PA-PD 0.5 dB
Overload PO
-3
dBm
Notes:
1. These are unfiltered 20%~80% values
2. The sensitivity is provided at a BER of 1×10
7
2
-1 PRBS and ER=9dB.
-12
or better with an input signal consisting of 1250Mb/s,
dBm
dBm 2
dBm
Mask of the eye diagram for the optical transmit signal
DELTA ELECTRONICS, INC.
3 2008/1/23
Rev. 6G
www.deltaww.com
SFP Transceiver Electrical Pad Layout
Pin Function Definitions
Pin Num. Name Function Plug Seq. Notes
1 VeeT Transmitter Ground 1
2 TX Fault Transmitter Fault Indication 3 Note 1
3 TX Disable Transmitter Disable 3
4 MOD-DEF2 Module Definition 2 3 Note 3, 2 wire serial ID interface
5 MOD-DEF1 Module Definition 1 3 Note 3, 2 wire serial ID interface
6 MOD-DEF0 Module Definition 0 3 Note 3, Grounded in Module
7 Rate Select Not Connect 3 Function not available
8 LOS Loss of Signal 3 Note 4
9 VeeR Receiver Ground 1 Note 5
10 VeeR Receiver Ground 1 Note 5
11 VeeR Receiver Ground 1 Note 5
12 RD- Inv. Received Data Out 3 Note 6
13 RD+ Received Data Out 3 Note 7
14 VeeR Receiver Ground 1 Note 5
15 VccR Receiver Power 2 3.3 ± 5%, Note 7
16 VccT Transmitter Power 2 3.3 ± 5%, Note 7
17 VeeT Transmitter Ground 1 Note 5
18 TD+ Transmit Data In 3 Note 8
19 TD- Inv. Transmit Data In 3 Note 8
20 VeeT Transmitter Ground 1 Note 5
Plug Seq.: Pin engagement sequence during hot plugging.
Note 2
Module disables on high or open
DELTA ELECTRONICS, INC.
4 2008/1/23
Rev. 6G
www.deltaww.com
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